{% extends "base.html" %}
 {% block title %}搜索{% endblock %}
 {% block body %}
 <div class="container">
    <h2>搜索图书</h2>
    <form action="{{ url_for('search') }}" method="post">
        <input type="text" name="search" placeholder="搜索书名" required>
        <input type="submit" value="搜索">
    </form>
 </div>
 {% endblock %}